JP3525065B2 - Suction port body and vacuum cleaner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the operation of an electric blower in a cleaner body to suck air through an air inlet of an air inlet body, pass the air through a filter to capture dust, and then pass through the filter. The present invention relates to an air circulation type electric vacuum cleaner that returns air discharged from an electric blower to an air intake port, collects the returned air, and circulates the air, and a suction port body included in the electric vacuum cleaner.

[0002]

BACKGROUND OF THE INVENTION U.S. Patent No. 5168559 Pat and JP-A 4-193239 discloses, the air discharged from the electric blower in the vacuum cleaner body, blanking the rotary cleaning body has
An air circulation type vacuum cleaner for performing air circulation type cleaning is described in which the rotary cleaning body is rotated by spraying on the blade and the air rotated by the rotary cleaning body is collected and sucked into the electric blower to perform air circulation type cleaning. There is.

According to the technique described in US Pat. No. 5,168,559, each blade arranged at intervals in the circumferential direction is provided so as to extend parallel to the axial direction of the rotary cleaning body, and the rotary cleaning is performed. To the blade that was moved to the bottom of the body,
By blowing air discharged from the electric blower along the surface to be cleaned, the rotary cleaning body is rotated. Further, according to the technique disclosed in JP-A-4-193239, the blade is spirally wound around the outer peripheral surface of the rotary cleaning body, and the air discharged from the electric blower is sucked into the rotary cleaning body. Of the rotary cleaning body is blown to the blade at one end of the rotary cleaning body to rotate the rotary cleaning body, and the air rotated by the rotary cleaning body is sucked at the other widthwise end portion of the suction port body. It is designed to be collected.

As described in these publications, the structure of the suction port body for blowing the circulating air to the blade to drive the rotary cleaning body to rotate has a structure in which an electric motor, an air turbine and an air turbine are used to rotate the rotary cleaning body. It is excellent in that a transmission mechanism from the above to the rotary cleaning body is unnecessary.

[0005]

However, US Pat. No. 5
When each blade extends parallel to the axial direction of the rotary cleaning body as described in 168559, when the number of blades is small, the blades and the blades adjacent to each other are alternately arranged from the electric blower. Since it faces the recirculation outlet that blows out the discharged air, unevenness occurs in the rotation speed and the rotation torque of the rotary cleaning body. Along with this, the ability of the blade to scrape dust off the surface to be cleaned, and eventually the dust suction performance, is reduced, and noise is easily generated. In addition, since the flow of the air collected around the rotary cleaning body to the electric blower side is disturbed due to the uneven rotation, the dust contained in the suction port facing the rotary cleaning body was included in the intake port. There is a problem that the outside air suction performance, and eventually the dust suction performance, are easily deteriorated.

Even if the rotary cleaning body has a spiral blade, the circulating cleaning body is rotatably driven by blowing the circulating air only to one end of the rotary cleaning body, and the other end of the cleaning body is rotated. In the configuration described in Japanese Patent Application Laid-Open No. 4-193239 that collects air from the side, the blowing of the circulating air to the spiral blade is substantially intermittent, so that the above-mentioned US Pat.
There are similar problems to those of 168559. or,
In this conventional technique, the air blown on the spiral blade of the rotary cleaning body then blows against the surface to be cleaned,
It is unknown whether dust on this surface will float. However, even if that is the case, since the spraying is partially limited as described above, the range in which the dust is floated off is small toward the one end side of the rotary cleaning body, and therefore the suction port body Has low dust absorption performance.

Further, none of the above-mentioned prior arts considers the fact that the air blown from the recirculation outlet is guided to the end of the inlet of the inlet body and blown onto the surface to be cleaned. Therefore, it is difficult to efficiently raise the dust on the surface to be cleaned by using the air that circulates at the widthwise ends of the suction port body, and the dust suction performance of the suction port body is low.

The first problem to be solved by the present invention is
Another object of the present invention is to obtain a suction port body that can improve the dust suction performance by utilizing the circulating air obtained by rotating the rotary cleaning body.

A second problem to be solved by the present invention is
In solving the first problem, it is an object of the present invention to obtain a suction port body that can further improve the dust suction performance and can suppress the noise accompanying the rotation of the rotary cleaning body.

A third problem to be solved by the present invention is
An object is to obtain an air circulation type vacuum cleaner that can solve the first problem.

[0011]

According to a first aspect of the present invention, air sucked by an electric blower built in a cleaner body is passed through a filter to capture dust, and the dust is passed through the filter to move from the electric blower. It is premised on a suction port body provided in an electric vacuum cleaner that collects discharged air and cleans it while circulating it.

In order to solve the first problem, the suction port body according to the invention of claim 1 has a suction port for suctioning air on the surface to be cleaned as the air circulates. A body main part, a communication pipe provided in the main part and communicated with the cleaner body side, and a suction pipe body main part facing the intake port and partially facing the inlet of the communication pipe. Between the rotary cleaning body that is rotatably attached and has a plurality of cleaning members on the outer peripheral surface, and the rotary cleaning body between the intake port.
Placed along the width direction of the main portion is provided continuously or discontinuously on the suction port body main portion and, this spraying with blowing air to the circulating from above said cleaning member
Before the air is blown onto the surface to be cleaned from above.
A rotary air outlet that is offset from the axis of the rotary cleaning body;
Also the outer peripheral surface of the part that does not face the inlet of the communication pipe
A part of the air blown from the reflux outlet
Guide it to the end of the rotating cleaning body and spray it on the surface to be cleaned below.
It is characterized by being twisted as described above . This
In carrying out the invention of claim 2, like the invention of claim 2,
Set the reflux outlet to the front side with respect to the axis of the rotary cleaning body.
It is recommended to stagger them.

In the invention of claims 1 and 2 , the air discharged from the electric blower circulates through the suction port body,
Along with this, the air sucked together with the dust on the surface to be cleaned from the suction port of the main part of the suction port body can be sucked into the cleaner body side through the communication pipe for air circulation type cleaning. The air returned to the main part is blown from the recirculation outlet of the main part to the cleaning member of the rotary cleaning body to be sucked into the communication pipe, so that the rotary cleaning body can be rotated in accordance with the blowing. Therefore, it is possible to perform air circulation type cleaning while scraping off dust on the surface to be cleaned by the cleaning member of the rotary cleaning body.

Since the circulating air blower blows the circulating air to the cleaning member at a place where the rotary cleaning body does not face the inlet of the communicating pipe at least, the air blown from the circulating blowout port is immediately sucked into the communicating pipe. It is not collected and can be effectively sprayed on the cleaning member. Moreover, at this time, the recirculation outlet blows the circulating air to the cleaning member from above to rotate the rotary cleaning body, so that the air immediately after being blown to the cleaning member is blown to the surface to be cleaned from above. , The dust on the surface to be cleaned can be lifted up, and the recirculation outlet is continuously or discontinuously provided in the main part of the suction port body along the width direction of this main part, The dust floating range due to the air blown from can be secured long in the width direction of the main portion of the suction port body. Moreover, since each cleaning member is twisted, a part of the air blown to the cleaning member is easily guided to the end of the rotary cleaning body along the twisting direction of the cleaning member,
From there, it can be sprayed onto the surface to be cleaned below. In other words, even on the surface to be cleaned facing the end side of the air intake port, the air guided obliquely downward by the cleaning member can be blown from above to lift the dust.

In carrying out the invention of claim 1 or 2 , like the invention of claim 3 which depends on these inventions,
It is preferable that the cleaning member is provided on at least axially opposite side portions of the rotary cleaning body, and the twisting directions of the cleaning members at the opposite side portions are opposite to each other. By doing so, the cleaning members whose twisting directions are opposite to each other easily guide the air blown to these cleaning members to both ends of the rotary cleaning body in accordance with the respective twisting directions, so that both ends of the rotary cleaning body can be easily guided. It is excellent in that it can be sprayed from above to each of the surfaces to be cleaned below.

In order to solve the second problem, a claim
A fourth aspect of the present invention, which depends on any one of the first to third aspects of the present invention, is one in which the cleaning member is continuously provided so as to be wound over substantially the entire length of the rotary cleaning body. In this invention, the twisting direction of each cleaning member at both ends of the rotary cleaning body is
It may be the same or the opposite.

In the invention of claim 4 , the above-mentioned claim
In addition to the effects of the inventions of items 1 to 3, the air blown from the recirculation outlet is twisted without interruption while being accompanied by a change in the axial direction of the rotary cleaning body at the portion hitting the twisted cleaning member. It can be sprayed on some part of the part. Therefore, it is possible to suppress fluctuations in the rotation torque and the rotation speed of the rotary cleaning body and smoothly rotate the rotary cleaning body. Moreover, since the cleaning member extends over substantially the entire length of the rotary cleaning body, the dust on the surface to be cleaned can be scraped out over the substantially entire length of the rotary cleaning body.

Further, in carrying out any one of the inventions of claims 1 to 4, claim 5 dependent on the invention is implemented.
As in the invention described above, the rotary cleaning body includes a core shaft, the cleaning member protruding from the outer peripheral surface of the shaft, and a support shaft support coaxially fitted to the outer periphery of both ends of the core shaft. , The support shafts protruding from the support shaft supports, and the bearings that respectively support the support shafts,
A plurality of cutout grooves extending in the axial direction are formed in a fitting portion of at least one of the support shaft supports to the core shaft, and an end portion of the cleaning member is passed through the cutout grooves to form an outer periphery of the support shaft support. It may be formed by projecting from the surface. In this way, even though there is a support shaft support for connecting the support shaft to the end of the core shaft, the end portion of the cleaning member can be extended to that portion, so that it can be arranged at the end of the intake port. On the other hand, it is excellent in that the end of the cleaning member can be brought closer to improve the scraping performance of dust to the surface to be cleaned on the end side of the intake port.

In the electric vacuum cleaner according to the invention of claim 6, the air on the surface to be cleaned is sucked from the suction port of the suction port body by the operation of the electric blower in the cleaner body, and the sucked air is passed through the filter. It is premised on an electric vacuum cleaner that captures dust, returns the air that has passed through the filter and is discharged from the electric blower to the intake port, and collects and circulates the returned air to perform cleaning. And in order to solve the said 3rd subject, the vacuum cleaner which concerns on invention of Claim 6 made the said suction inlet the suction inlet of any one of the said Claims 1-5 . It is characterized by that.

[0020] Thus, in this air circulation type vacuum cleaner, by providing the suction port body according to any one of the claims 1 to 5, originating <br/> Ming claims 1-5 described above The operation of the invention of any one of the above can be obtained.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 2, an upright type air circulation type vacuum cleaner 11 according to the first embodiment includes a cleaner body 12, a suction port body 13, and a handle 14. .

The cleaner body 12 is formed by connecting a pair of left and right synthetic resin body cases 21 with screws or the like. The handle 14 is connected to one side of the upper end portion of the main body case 21 (the side that becomes the back side when used) via a pivotal attachment portion 15. Handle 14 having operation switch 14a
1 is disposed in a use position that continuously extends above the cleaner body 12 as shown in FIG. 1 when used, and when not used, the cleaner body is folded downward by pivoting around the pivotal attachment portion 15. 12 is disposed in a non-use position along the back side.
The length of the handle 14 is substantially equal to the total length of the cleaner body 12 and the suction port body 13 connected to the cleaner body 12 as described below, and the lower end of the handle 14 in the non-use position is in contact with the floor surface. In this case, the vacuum cleaner body 12 can be supported so as not to lose its self-standing posture.

A connection port 22 exposed at the lower end surface of the main body case 21 is attached to the lower end portion. As shown in FIG. 3, the suction port body 13 is detachably inserted and attached to the connection port 22. This connection port 22 has a large diameter portion 22a.
And a small diameter portion 22b are connected to form a stepped cylindrical shape,
A plurality of ventilation holes 22c are provided at intervals in the circumferential direction on the wall surface that defines the boundary between the small diameter portion 22b and the large diameter portion 22a.

As shown in FIG. 2, required partition ribs are integrally provided on the inner surfaces of the two main body cases 21 so that their tips come into contact with each other when they are connected. Inside is the dust collection chamber 23 at the bottom,
It is partitioned into an exhaust chamber 24 in the middle part, a reel housing part 25 in the upper part, and a recirculation chamber 26 extending over the dust collection chamber 23 and the exhaust chamber 24. The dust collection chamber 23, which is located on the front side of the exhaust chamber 24 (upstream side with respect to the intake air), is opened on the surface that is the front side when the cleaner body 12 is used, and this opening can be attached to and detached from the lower portion of the body case 21. Case lid 27 attached to
It is hermetically closed by.

As shown in FIG. 3, the slanted bottom wall portion of the dust collecting chamber 23 is formed as a filter mounting portion 28, and the vicinity of the filter mounting portion 28 is manually operated against the force of a spring (not shown). 2 A filter retainer 30 is attached which is pivotally operated about a pivot 29 in the direction of the middle arrow E. Filter attachment portion 28 and small diameter portion 22b of connection port 22
An annular rubber seal 20 for airtightly partitioning these is interposed between and, and the seal 20 integrally has a valve plate portion 20a for opening and closing a suction opening of a mouth frame described below. There is. The valve plate portion 20a is pulled by the suction negative pressure to open the suction opening, and is returned to the position where the suction opening is closed by its own elastic force as the negative pressure disappears.

The dust bag 31 made of a paper pack as a filter that can be put in and taken out of the dust collection chamber 23 has a flat plate-shaped mouth frame 31a having a suction opening at the center thereof, which is filtered by the filter holder 30. It is attached to the attachment portion 28 and is housed in the dust collection chamber 23. A filter support 32 having a large number of elongated ventilation holes is housed in the upper portion of the dust collection chamber 23, and the filter support 32 supports the dust collection bag 31 that has expanded due to the cleaning operation.

An electric blower 35 is installed in the exhaust chamber 24 with its suction port facing the dust collecting chamber 23 side. 36, 3
Reference numeral 7 is a vibration-proof motor supporting rubber fitted to both front and rear ends of the electric blower 35. The partition rib 38 located at the boundary between the exhaust chamber 24 and the dust collecting chamber 23 is provided with an opening 38a facing the suction port, so that the dust collecting bag 31 in the dust collecting chamber 23 is passed. Air is an electric blower 35
Is sucked into. Reference numeral 45 in FIG. 2 is arranged in communication with the suction side of the electric blower 35 and opens when the vacuum pressure in the dust collection chamber 23 falls below a predetermined value to collect the air (outside air) outside the cleaner body 12. It is a leak valve for introducing into the dust chamber 23.

The electric blower 35 has an electric blower 35a and a motor cover 39 attached to the blower 35a. As shown in FIG. 2, the electric blower 35a is
A commutator motor portion 35c, which is a component other than the blower portion such as a stator and a rotor, is projected downstream of the blower portion 35b in which the diffuser and the centrifugal fan are housed inside the fan cover. The motor support rubber 36 is fitted on the outer peripheral surface of the fan cover. During operation of the electric blower 35, the air in the dust collecting chamber 23 side sucked into the centrifugal fan through the suction port is discharged from the periphery of the fan, and then is guided by the inner surface of the fan cover while being guided to the outer periphery of the diffuser. From the entrance of the department, and
While being statically pressured by this diffuser, it is mainly discharged toward the periphery of the commutator motor portion 35c and the like.

The motor cover 39 formed of synthetic resin in a cup shape covers the portion of the blower portion 35b on the downstream side of the diffuser. The opening edge portion of the cover 39 is fitted on the outer peripheral portion of the fan cover with the motor supporting rubber 36 that hermetically seals between the both covers sandwiched therebetween. On the peripheral wall of the motor cover 39, a plurality of exhaust small holes (not shown) communicating the inside of the motor cover 39 with the exhaust chamber 24 are formed, and an exhaust port (not shown) facing the exhaust chamber 24 (not shown) in the main body case 21 ( The exhaust area is much larger than that of the exhaust small holes), and a predetermined amount of air is exhausted to the outside of the cleaner body 12 with respect to the circulating air volume by these exhaust paths to obtain the required intake performance. Is able to.

The motor support rubber 37 is attached to the central portion of the bottom wall of the motor cover 39 so as to project from the outer surface thereof. Electric blower 35 provided with this motor cover 39
With the motor support rubbers 36 and 37 fitted to both axial ends thereof, respectively, in the exhaust chamber 24 and the reel housing portion 25.
It is installed by being inserted between the partition rib 21b and the partition rib 38 which form the boundary of the above. As shown in FIG. 2, a cord reel 40 for supplying power to the electric blower 35 is housed in the reel housing portion 25.

As shown in FIG. 2, an air outlet 41 having an opening area much larger than that of the exhaust small hole (not shown) is integrally provided at the peripheral portion of the motor cover 39, and a rubber is provided at the outlet 41. The packing 42 is fitted. The air outlet 41 is airtightly connected to a hole 44 provided in a partition rib 43 that partitions the reflux chamber 26. Therefore, the inside of the motor cover 39 and the recirculation chamber 26 are communicated with each other via the air outlet 41.

Next, the suction port body 13 will be described with reference to FIGS. The suction port body 13 includes a communication pipe 51 made of synthetic resin as a connection part that is communicated with the cleaner body 12 side, a suction port body main part 52 made of synthetic resin, a rotary cleaning body 53, and a reflux outlet 54. And a return air passage A and a suction air passage B.

The connecting pipe 51, which is connected to the cleaner body 12 by being removably fitted into the connecting port 22, is connected to the connecting port 2 as shown in FIGS. 3, 8 and 9.
The large-diameter outer pipe portion 61 that is insertably and removably inserted into the second large-diameter portion 22a, and the small-diameter portion 2 of the connection port 22 that is integrally and concentrically provided inside the large-diameter outer pipe portion 61 via a plurality of ribs
Inner tube portion 6 with a small diameter that is insertably and removably inserted into 2b
2 and the two pipe parts 6 in opposite directions so as to face each other.
1 and 62 have a pair of left and right pivot tube portions 63 that are provided so as to project substantially at right angles to the axial direction. A pair of pivot tube parts 63
Has a cylindrical shape, and a flange 63a continuous in the circumferential direction is integrally provided on the open front end edge thereof.

One end of the outer pipe portion 61 is open, and the other end is individually communicated with the pivot pipe portion 63 through a pair of communication ports 64. The tip of the pivot tube portion 63 is open,
The rear end is closed by the inner pipe portion 62. An annular seal member 65 such as an O-ring made of synthetic rubber is attached to the outer peripheral surface of the outer pipe portion 61. As shown in FIG. 3, the outer pipe portion 61
Is a flange portion 61a that integrally projects from the outer peripheral surface thereof.
Is fitted inside the large-diameter portion 22a until it hits the tip of the large-diameter portion 22a of the connection port 22. In the connected state by this fitting, the airtightness between the large diameter portion 22a and the outer pipe portion 61 is ensured by the sealing material 65, and the inner and outer pipe portions 6 are
The flow path portion between 1 and 62 is communicated with the reflux chamber 26 through the ventilation hole 22c. A lock mechanism (not shown) is provided on the connection port 22 side, and the claw of this mechanism is used for the outer pipe portion 61.
By hooking on the recess 61b provided on the outer peripheral surface of
The suction port body 13 is prevented from being detached from the connection port 22, and the detachment stopper can be removed for maintenance or the like.

Both axial ends of the cylindrical inner tube portion 62, which is longer than the outer tube portion 61, are open. The inner pipe portion 62 fitted in the small diameter portion 22b along with the attachment of the communication pipe 51 to the connection port 22 guides air containing dust into the dust collecting bag 31.

The opening at the tip of the inner pipe portion 62 protruding outside the connection port 22 is an inlet 62 provided between the pivot pipe portions 63.
The inlet upper wall 66 and the inlet lower wall 67 respectively project outward at the upper and lower edges thereof. The pair of left and right inlet end side walls 62b that form the boundary between the inlet 62a and the pair of pivot tube portions 63 have a distance between their facing surfaces that is upstream from the inner tube portion 62 in the air suction direction (see an arrow indicated by a dashed line in FIG. 8). It is formed in a slanted shape so as to spread. This structure reduces wind loss and allows the air to smoothly enter the inlet 62.
It is excellent in that it can be sucked into a.

As shown in FIGS. 4 to 7, the main body 52 of the suction port body includes a main case upper case 71, a main part lower case 72,
It is formed by connecting a main part middle case 73 sandwiched between these by screwing.

A pair of bearings 74 having semicircular recesses on the inner surfaces of the upper and lower cases 71, 72 on the rear side of the middle case 73 of the main part (only the main case lower case 72 side is shown in FIG. 6) are integrally projectingly provided, and the respective pivot tube portions 63 are rotatably connected by being sandwiched from above and below by the upper and lower bearing portions 74 which are fitted to each other. With this connection structure, the communication pipe 51 is pivotally attached to the rear portion in the central portion in the width direction of the suction port body main part 52 so as to be rotatable up and down, and by this rotation, the suction port body main part 52 is covered. You can get a proper posture for the cleaning surface. The relative rotation of the communication pipe 51 and the suction port body main part 52 is restricted by the inlet lower wall 67 and an upward stopper part 75 provided in the main part lower case 72 between the bearing parts 74 thereof. During the rotation, the mating surfaces of the flange portion 61a and the bearing portion 74 are in sliding contact with each other. In FIG. 8, P indicates the center of rotation between the communication pipe 51 and the suction port body main portion 52.

A blowout chamber 81 is provided in the main body 52 of the suction port body.
And a recovery chamber 82 below the blowing chamber 81, and the main middle case 73 forms a partition wall between the chambers 81 and 82. The blowout chamber 81 includes a rib 83 (see FIG. 4) projectingly provided on the inner surface of the main part upper case 71 and the main part lower case 7.
2 and the mating surfaces of the ribs 84 (see FIGS. 5 and 6) protruding from the inner surface of the rib 2 are fitted to each other by projections and depressions.
Rib 8 projectingly provided on the inner surface of the upper case 71 of the main part.
5 (see FIG. 4) and ribs 86 (see FIG. 5) projectingly provided on the upper surface of the main part middle case 73 are partitioned by fitting the mating surfaces into each other. The other ribs 87 to 90 shown in FIGS. 4 to 6 surround one side and the front side of the blowout chamber 81, and these ribs are provided in each of the cases 71 to 73 similarly to the ribs 83 to 86. . The front portion of this enclosure has substantially the same shape as an intake port 91 described later, and is formed right above the intake port 91.

The recovery chamber 82 is divided into a lower main case 72 and a main middle case 73. Both cases 72,
The mating surfaces of 73 are fitted into each other by projections and depressions. An intake port 91 is formed in the bottom wall 72a of the lower main case 72 so as to face the recovery chamber 82, as shown in FIGS. The intake port 91 is formed as a rectangular opening extending in the width direction of the intake port body 13 (left-right direction in FIGS. 4 to 7). As shown in FIG. 7, the bottom wall 72 of the main part lower case 72
A fixed brush 92 is attached to a along the rear edge of the intake port 91. The brush 92 is also used as a windproof means for preventing the air blown to the surface to be cleaned through the air intake port 91 from blowing backward toward the suction port body 13.

As shown in FIG. 8, the rear end portion in the widthwise central portion of the main portion middle case 73 is bent upward so as to be fitted into the inner surface of the main portion upper case 71 in a concavo-convex manner, and the bent portion. An arcuate portion 73a is formed on the. The arcuate portion 73a is the inlet 62 of the communication pipe 51.
It is arranged to face the front side of a. The main portion lower case 72 is provided with a guide 93 having a circular arc surface continuous from both ends in the width direction of the circular arc portion 73a. The arcuate portion 73a and the guide 93 which are continuous with each other guide the movement of the arcuate shutter 94. The shutter 94, which is reciprocally moved in association with the raising / lowering operation of the communication pipe 51 with respect to the suction port body main portion 52, is provided over the communication pipe 51 and the suction port body main portion 52, and is provided inside the rear edge portion 94a. The upper wall 66 of the inlet of the communication pipe 51 is hooked.

Therefore, as shown in FIG. 8, the shutter 94 is pulled by the inlet upper wall 66 and is pulled by the inlet upper wall 66 when the communication pipe 51 is in an inclined posture with respect to the suction port main portion 52, as shown in FIG. As shown in FIG. 3, the rear edge portion 94 is disposed in the open position shown in FIG. 3 and is in a posture in which the communication pipe 51 has a right angle with respect to the suction port body 52 when not in use.
The inner pipe portion 62 hits a and is pushed by this pipe portion 62 to be placed in the closed position. When the shutter 94 is in the open position, the air passage cross-sectional area in the suction air passage B immediately before the inlet 62a is the maximum, and when the shutter 94 is in the closed position, the air passage cross-sectional area is the smallest in the immediately preceding position. (Shutter 94
Includes a state in which the air passage cross-sectional area becomes zero by hitting the bottom wall 72. ) Is set. As described above, the shutter 94 that interlocks when the communication pipe 51 rises above a certain angle is provided to limit the cross-sectional area of the air passage. Even if the electric blower 35 is operating when the vehicle is placed in an independent posture, the amount of air circulating through the suction port body 13 is drastically reduced, so that the rotation of the rotary cleaning body 53 can be significantly reduced or stopped automatically. It is excellent in being able to do it.

The front portion of the recovery chamber 82 is located directly above the intake port 91 and communicates with this port 91. Collection room 82
The rear part is narrowed so as to be converged at the center part in the width direction and slightly extends rearward, and the extending rear part faces and communicates with the inlet 62a of the inner pipe part 62 of the communication pipe 51. The recovery chamber 82 and the inner flow passage of the inner pipe portion 62 form a suction air passage B communicating with each other. The air blown into the recovery chamber 82 toward the intake port 91 through the air passage B and the air sucked from the surface to be cleaned into the intake port 91 are sucked into the cleaner body 12 side. It has become.

As shown in FIGS. 6 to 8, FIG. 10 and FIG. 11, the rotary cleaning body 53 includes a core shaft 101 made of metal such as an aluminum alloy extruded die material, and the shaft 1.
01 and one or more first blades 102 and second blades 103 as cleaning members protruding from the outer peripheral surface of 01, and support shaft supports 104 and 105 coaxially fitted to the outer circumferences of both ends of the core shaft 101, respectively. These support shaft supports 10
4 and 105, the support shafts 106 are respectively provided so as to project, and the bearings 107 that respectively support the support shafts 106 are formed. Therefore, the rotary cleaning body 53 is configured such that the portions other than the bearings 107 at both ends thereof are rotated integrally.

The core shaft 101 of the rotary cleaning body 53 and the plurality of blades 102 and 103 attached to the core shaft 101 are both twisted, and each of the blades 102 and 1 is also twisted.
Each of 03 is provided so as to be continuously wound over the entire length of the core shaft 101. Therefore, each of the blades 102 and 103 is provided so as to include both end portions of the core shaft 101 which do not face the inlet 62a of the communication pipe 51. In FIG. 6, dimension G indicates a portion of the core shaft 101 facing the inlet 62a, and H indicates a portion of the core shaft 101 not facing the inlet 62a.

The first blades 102 provided 180 ° apart from each other in the circumferential direction of the core shaft 101 are made of flexible rubber or synthetic resin. These first blades 1
The second blade 103, which is provided at a distance of 90 ° from 02 and at a distance of 180 ° in the circumferential direction of the core shaft 101,
With a blade main plate made of flexible rubber or synthetic resin,
It is formed of brush bristles embedded and protruding at the tip of the main plate portion. Such first and second blades 1
The rotary cleaning body 53 having 02, 103 is particularly suitable for cleaning flooring floors.

Support shaft support 10 for the first blade 102
The end portion on the fifth side forms a triangular extending end 102a, and this portion faces the outer peripheral surface of the support shaft support 105. The end portion of the second blade 103 on the bearing support 105 side projects from the outer peripheral surface of the support 105. Therefore, as shown in FIG. 11, the core shaft 10
Bearing support 105 fitted to one end portion of 1 and fixed by adhesion
The blade-side tubular portion 105a of the
b is formed. The notch groove 105b is provided so as to extend in the axial direction while being twisted, and the second blade 10 is provided there.
The end of 3 is threaded. The end surface of the second blade 103 on the bearing support 105 side is perpendicular to the core shaft 101. The end faces of the blades 102 and 103 on the bearing support 104 side are both perpendicular to the core shaft 101.

The rotary cleaning body 53 having the above-mentioned structure is used for the bearing 1 thereof.
07 is attached to the bearing holding portions (not shown) provided at both ends of the lower case 72 of the main portion in the width direction so as not to rotate so as to face the intake port 91 in a posture parallel to the recovery chamber 82.
It is located in. When the rotary cleaning body 53 is rotated, the tips of the blades 102 and 103 pass through the intake port 91 and come into contact with the surface to be cleaned.

A bottom lid 109 is attached to one end of the main body lower case 72 in the width direction, which is attached and detached by turning the lock knob 108 to open one end of the intake port 91 in the width direction, as shown in FIG. Accordingly, the rotary cleaning body 53 is attached from the lower side of the suction port main body 52 with the attachment and detachment of the bottom lid 109. That is, with the bottom lid 109 removed, the rotary cleaning body 53 is passed through the intake port 91 from below from the bearing 107 on the supporting shaft support 104 side, and the one bearing 107 is not shown. After being inserted and held in the bearing holding portion of the main body, the entire rotary cleaning body 53 is passed through the intake port 91 to be housed in the main body lower case 72, and the other bearing 107 on the supporting shaft support 105 side is formed in the main body lower case 72. Then, the bottom lid 109 is attached to the lower case 72 of the main part, and the other bearing 107 is held between the bottom lid 109 and the other bearing holding portion. The rotary cleaning body 53 is attached by the above procedure.

4 and 5 are provided at the rear of the blowing chamber 81.
As shown in FIG. 5, the pivot pipe portion 63 of the communication pipe 51 is arranged, and the blowout chamber 81 and the flow path between the inner and outer pipe portions 61 and 62 of the communication pipe 51 are connected via these pipe portions 63. ing. As described above, the front part of the blowout chamber 81 faces the main part middle case 73, and the reflux blowout port 54 penetrates through the main part middle case 73 to the width direction of the suction port body main part 52. It is formed along. The recirculation blowout port 54 provided with the rotary cleaning body 53 provided between the intake port 91 blows the air in the blowout chamber 81 to the blades 102 and 103, and pushes the suction port body 13 forward. Rotational direction F of the rotary cleaning body 53 that rotates along with the occasion (see FIG. 8)
Is defined as the forward direction, it is located in front of the core shaft 101 of the rotary cleaning body 53 so as to obtain the rotation in the forward direction, and thus is displaced from the central axis of the rotary cleaning body 53 to the front side. It is opened in the middle case 73. The shift dimension to the front side is indicated by S in FIG.

The return air outlet 54 is formed by a slit extending continuously in the width direction of the suction inlet main portion 52. Therefore, the circulation outlet 54 is provided parallel to the axis of the rotary cleaning body 53. The circulation outlets 54 are arranged in the same manner in the width direction of the main body 52 of the suction inlet with the communication pipe 51 as the center. The reflux outlet 54 may be formed by a plurality of discontinuous holes or the like, and in this case as well, it may be provided so as to be divided into the left and the right as in the present embodiment. Further, although the reflux outlet 54 of this embodiment is shorter than the core shaft 101,
It can also be made to have almost the same length.

In the above structure, the flow passage between the inner and outer pipe portions 61 and 62 of the communication pipe 51, the inner flow passage of the pivot pipe portion 63, and the blowout chamber 81 of the suction port body main portion 52 communicate with each other in this order. The return air passage A is formed, and the electric blower 3
The air discharged from 5 is guided to the return outlet 54 by the return air passage A, and passes through the outlet 54 to the intake port 9
It is set back to 1.

In the figure, 111 is a bumper mounted along the outer surface of the front part of the main body 52 of the suction port, 112 is a front wheel mounted on the lower case 72 of the main part, and 113 and 114 are rear wheels.

Next, the operation of the air circulation type vacuum cleaner 11 provided with the suction port body 13 having the above construction will be described. As shown in FIG. 1, this electric vacuum cleaner 11 has a connection pipe 22 of a suction port body 13 inserted and connected to a connection port 22 of a cleaner body 12 and a power cord rewound from a cord reel 40. Power the electric blower 35, and the blower 35
It is used by moving the vacuum cleaner 11 as a whole through the handle 14 while driving the vehicle and bringing the suction port body 13 into contact with the surface to be cleaned.

During this use, the dust contained in the suction air (indicated by the dotted arrow in FIGS. 1 and 8 indicating the flow direction) introduced into the suction air passage B of the suction port body 13 and flowing into the dust collecting bag 31. The air captured by the dust collecting bag 31 and passing through the dust collecting bag 31 further passes through the filter support 32 and the electric blower 3
5 is discharged into the recirculation chamber 26 through the air outlet 41 of the motor cover 39, and a part thereof passes through the exhaust small hole (not shown) and the exhaust chamber 24 and the exhaust port (not shown). And is discharged to the outside of the cleaner body 12.

The exhaust gas flowing into the reflux chamber 26 is connected to the connection port 22.
Is guided to the return air passage A of the suction port body 13 from the ventilation hole 22c and is blown from the return air outlet 54 to the collection chamber 82 side of the suction air passage B toward the intake port 91, for example. Such an air flow is shown by a solid arrow in FIGS. Therefore, the blown-out air is the blades 102, 103 of the rotary cleaning body 53 that is rotatably arranged immediately below the recirculation blowout port 54.
8, the cleaning body 53 is rotated clockwise in FIG. 8, and immediately thereafter, the cleaning body 53 is sprayed on the surface to be cleaned facing the air inlet 91, and then dust on the surface to be cleaned is floated. While being raised, it is sucked into the collection chamber 82 through the suction port 91 and is collected in the suction air passage B. Then, along with this collection, the dust is collected in the dust collecting chamber 23 of the cleaner body 12.

As the air discharged from the electric blower 35 is thus collected and circulated by the suction port body 13,
With that momentum, the outside air between the bottom wall 72a of the suction port body 13 and the surface to be cleaned is sucked into the suction port 91 together with the dust, and the rotary cleaning body 53 is rotated using the circulating air. It is possible to perform air circulation type cleaning while scraping dust on the surface to be cleaned by the blades 102 and 103.

By the way, since the twisted blades 102 and 103 are continuously provided so as to wind around the entire length of the rotary cleaning body 53 as described above, in the air circulation type cleaning, the recirculation outlet is provided. The recirculating air blown out from the blades 54, 102, 10
Can be sprayed on some part of 3. In this way, by rotating the rotary cleaning body 53 with a change in the point where the recirculation air is blown to the blades 102 and 103, fluctuations in the rotational torque and the rotational speed of the rotary cleaning body 53 are suppressed, and smooth rotary cleaning is performed. The body 53 can be rotated.

In this case, since the circulating air is blown from the recirculation outlet 54 to the blades 102 and 103 even when the rotary cleaning body 53 does not face the inlet 62a of the communication pipe 51, the rotary cleaning body 53 is In the area not facing the inlet 62a of the communication pipe 51, the air blown from the recirculation outlet 54 is not immediately sucked into the communication pipe 51 and is not collected, so that the blade 102 can be effectively used.
It is sprayed on 103. Therefore, as described above, the uneven rotation of the rotary cleaning body 53 is suppressed, and the rotary cleaning body 53 is prevented.
Can be rotated smoothly.

With the smooth rotation of the rotary cleaning body 53, noise can be reduced and the blade 10
It is possible to improve the performance of scraping out dust on the surface to be cleaned by 2, 103. In addition, as the rotation cleaning body 53 is prevented from having uneven rotation, the flow of air collected around the rotation cleaning body 53 and recovered to the electric blower 35 side is less disturbed. It is possible to enhance the suction performance of the outside air containing dust passing through the facing intake port 91.

Moreover, the recirculation outlet 54 blows the circulating air onto the blades 102 and 103 from above to rotate the rotary cleaning body 53, so that the first and second blades 1
The air immediately after being blown onto 02, 103 can be blown onto the surface to be cleaned from above so that the dust on the surface to be cleaned can be lifted up. In addition, since the recirculation outlet 54 is continuously provided in the suction port body main portion 52 so as to extend in the width direction of the main portion 52, the dust floating range due to the air blown onto the surface to be cleaned from above. Can be secured long in the width direction of the main body 52 of the suction mouth.

In addition, the first and second blades 102, 1
Since all of 03 are twisted, a part of the air blown on the twist blades 102 and 103 is easily guided to one end of the rotary cleaning body 53 toward the downstream side in the twist direction of the blades 102 and 103. From there, it can be sprayed on the surface to be cleaned below. Thus, even on the surface to be cleaned facing one end side of the intake port 91, air guided obliquely downward by the blades 102 and 103 in accordance with the twisting direction can be blown from above so that dust can be lifted up. it can. As a result, a dust floating range due to the air blown onto the surface to be cleaned from above can be secured longer in the width direction of the suction port main portion 52. And
The blowing of the circulating air onto the surface to be cleaned is performed by the circulation outlet 5 rather than the blades 102 and 103 as in the present embodiment.
Even when the length 4 is short and the opening 54 faces only the intermediate portion of the blades 102 and 103, it can be realized by the guide action to the downstream side in the twisting direction.

Further, in this embodiment, since the first and second blades 102 and 103 extend over substantially the entire length of the rotary cleaning body 53, the dust on the surface to be cleaned is removed over substantially the entire length of the rotary cleaning body 53. Can be scraped. Moreover, the blade-side tube portion 1 of the one support shaft support 105 provided in the rotary cleaning body 53
Since the end portion of the first blade 102 is made to protrude from the outer peripheral surface of the support shaft support 105 into the plurality of notched grooves 105b formed in the core shaft 05a, the rotary cleaning body 53 is
Although the support shaft support 105 for connecting the support shaft 106 is provided at the end of 01, the one end of the first blade 102 can be provided so as to enter the intermediate portion in the axial direction of the support 105. In addition, the second blade 103
Also in the above, the triangular extending end 102a is provided at the end on the supporting shaft support 105 side. Therefore, regardless of the existence of the support shaft support 105, the first and second blades 1
By making one end of 02, 103 closer to one end 91a of the intake port 91, it is possible to secure a longer total length of the blades 102, 103. It should be noted that the dimension J in FIG. 6 indicates the dimension in which the blades 102 and 103 are extended by the above structure.
By increasing the length of the blades 102 and 103 in contact with the surface to be cleaned in this way, the range of scratching of dust on the surface to be cleaned by these can be secured long, and the range of scraping from the one end in the width direction of the main body 52 of the suction inlet body. The distance to the edge of can be shortened. Therefore, when one end of the suction port body main portion 52 in the width direction is applied to the room wall of the surface to be cleaned, the distance where dust cannot be scraped out near the room wall can be shortened.

The suction port body 13 of the electric vacuum cleaner 11 for air circulation type cleaning as described above has the recirculation outlet port 54 provided in the central portion of the suction port body main portion 52 in the width direction. Blades 102, 103 centering on the communication pipe 51
Are equally distributed in the extending direction, the air flow from the recirculation outlet 54 to the inlet 62a of the communication pipe 51 does not deviate to one end side in the longitudinal direction of the rotary cleaning body 53, and Blade 10 of cleaning body 53
Reflux outlet 54 with respect to the intermediate portion in the longitudinal direction of 2, 103.
The air is blown from the blades 102 and 103, and the load applied to the rotary cleaning body 53 by the air blowing on the blades 102 and 103 is applied to the rotary cleaning body 53.
The same can be done at both longitudinal ends. Therefore, the rotary cleaning body 53 can be smoothly rotated, and the loads on the both bearings 107 are equalized.
Since the 07 is prevented from being worn early on the other bearing 107, the rotary cleaning body 53 is less likely to rattling even during long-term use, and smooth rotational performance can be maintained.

Further, as described above, since the circulation outlets 54 are provided in the widthwise direction of the main body 52 of the inlet body with the communication pipe 51 as the center, the opening area of the outlet 54 is reduced. It is possible to secure a large size as compared with the case where the reflux outlet 54 is provided so as to face only one end portion of the rotary cleaning body 53, and since the reflux outlet 54 is formed by the slit, a larger opening area can be secured. Thereby, the air resistance at the recirculation outlet 54 is reduced, and the circulating air easily flows, so that the back pressure on the electric blower 35 that circulates the air can be reduced, and accordingly, the reduction in the blowing performance of the electric blower 35 can be suppressed. In addition to the above, the amount of air blown onto the blades 102 and 103 is increased, and the ability to smoothly rotate the rotary cleaning body 53 can be improved.

Further, in the first embodiment, the rotation direction of the rotary cleaning body 54 rotated by the air blown from the recirculation outlet 54 and the rotary cleaning when the suction port main body 52 is advanced. Since the rotation direction of the body 54 is the same, when the suction port body main portion 52 is advanced along the surface to be cleaned, the rotary cleaning body 54 rotated by the force of the air blown out from the recirculation outlet 54. Rotation of the suction inlet body 5
It can help move forward two. In addition, the reflux outlet 54
Of the blades 102, 103 blows the circulating air toward the blades 102, 103 moved to the upper part of the rotary cleaning body 53, so that the blades 102, 103 moved to the upper part of the rotary cleaning body 53 are circulated. While receiving the air and generating the rotational force, the blades 102 and 103 moved to the lower portion of the rotary cleaning body 53 scrape out the dust on the surface to be cleaned. Therefore, the blade 10 moved to the lower part
Since the circulating air is not blown to the blades 2 and 103, the blades 102 and 103 moved to the lower portion are deflected by the force of the blown air so as to escape from the surface to be cleaned. It is possible to prevent deterioration of the dust scraping performance.

In the first embodiment, the blades 102 and 103 are not the entire core shaft 101, but the portion of the core shaft 101 facing the inlet 62a of the communicating pipe 51, for example, the dimension G is shown. The core shaft 101 may be provided only on both sides of the core shaft 101 except the central part. In this case, the blades 102, 10 at both ends
The reflux outlets 54 may be separately provided on the left and right sides facing the respective three.

Next, the second embodiment of the present invention shown in FIGS.
The embodiment will be described. In this description, the same components as those in the first embodiment will be designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted. The components different from those in the first embodiment will be described. Only will be described below. The difference between the second embodiment and the first embodiment is the configuration of the rotary cleaning body and the length of the reflux outlet.

That is, the rotary cleaning body 121 includes a core shaft 122 made of metal such as an extrusion mold material of aluminum alloy or made of hard synthetic resin, and a sleeve-shaped blade base 123 adhered to the outer peripheral surface of the shaft 122. , This base 1
23 has a plurality of blades 124 as cleaning members provided at equal intervals along the circumferential direction. At both ends of the core shaft 122, a support shaft support 126 having a support shaft 125 projecting therefrom is connected, and a bearing 127 for rotatably supporting the support shaft 125 is attached.

The cylindrical blade base 123 and each blade 124 are integrally molded, and each blade 12
4 is made of synthetic resin such as rubber or soft vinyl chloride. As shown in FIG. 13, the mutually parallel blades 124 are twisted in opposite directions from both ends of the core shaft 122 toward the center of the core shaft 122 in the longitudinal direction, and are integrally formed at the center of the core shaft 122 in the longitudinal direction. Have been consecutive. Therefore, each blade 124 has a blade base 1
It has a substantially V shape along the peripheral surface of 23, and the V-shaped top portion approaches the inlet 62a of the communication pipe 51 in advance as viewed from above, and both ends of the V-shape recede with respect to the inlet 62a. It is provided to do. Therefore, when the blades 124 are positioned on the front side of the rotary cleaning body 121, the tops of the V-shapes face upward and the both ends of the V-shapes face obliquely downward when viewed from the front side of the suction port body 13. It is provided. Thereby, the rotary cleaning body 121
Each blade 12 so that both end portions of the V-shape that are obliquely downward with respect to the top of the V-shape are rotated in advance in the rotation direction.
4 are provided. Also, each blade 124
The V-shaped apex of the blade 124, which is adjacent to the front side in the rotation direction of the rotary cleaning body 121, is provided in a relationship in which the V-shaped apex is in contact with or intersects rearward with respect to a straight line connecting both ends of the V-shaped.
The rotary cleaning body 1 having such a V-shaped blade 124
21 is generated by the air blown onto the blade 124.
Both ends of the V-shape of the blade 124 are rotated prior to the top of the V-shape. Further, in this embodiment, the reflux outlet 54 is provided over the range of substantially the same length as the V-shaped blade 124. The configuration other than the points described above is the same as that of the first embodiment including the configuration not shown in FIGS. 12 and 13.

Also in the second embodiment, the same operation as in the first embodiment can be obtained, and the first problem of the present invention can be solved. Moreover, since the twisting blades 124 are provided so as to be twisted in opposite directions with respect to the central portion thereof and to be wound around the core shaft 122, these twisted blades 124 may be twisted in mutually opposite directions by these twisted blades. The air blown to the blade 124 through the reflux outlet 54 above the blade 124 can be easily guided to both ends of the rotary cleaning body 121 in accordance with the respective twisting directions.
Thereby, the air that recirculates from above can be blown from both ends of the rotary cleaning body 121 to each of the surfaces to be cleaned below, so that the dust floating range due to the air blown from above to the surface to be cleaned can be increased. It is possible to secure a longer length in the width direction of the main body 52 of the suction mouth than in the case of the first embodiment.

Incidentally, also in the second embodiment,
The blade 124 is not the entire core shaft 122, but the facing portion of the core shaft 122 facing the inlet 62a of the communication pipe 51,
For example, the core shaft 122 may be provided only on both side portions thereof, excluding the central portion thereof. In this case, the reflux outlets 54 may be separately provided on the left and right sides so as to face the blades 124 at both ends thereof.

The present invention is not limited to the above-mentioned embodiments, but can be applied to a canister type or a handy type air circulation type vacuum cleaner. Further, in the present invention, the cleaning member of the rotary cleaning bodies 53, 121 may be one in which brush bristles are formed in a row and continuously arranged.

[0074]

The present invention is carried out in the form as described above, and has the following effects.

According to the suction port body of the first to third aspects of the invention, the air blown from the recirculation outlet is effectively blown onto the cleaning member of the rotary cleaning body from above and the object to be cleaned is immediately cleaned. Also, the dust on the surface to be cleaned can be lifted by spraying from above onto the surface as well, and the lifting range of this dust can be secured long in the width direction of the main body of the suction port, and by twisting each cleaning member, Part of the air blown to the cleaning member is guided to the downstream side in the twisting direction of the cleaning member, and this air is also blown onto the surface to be cleaned facing the end side of the intake port from above to lift the dust. The dust collection performance can be improved by utilizing the circulating air that rotates the rotary cleaning body.

According to the suction port body of the fourth aspect of the present invention, in addition to the effect of any one of the first to third aspects of the present invention, the cleaning member reduces the performance of scraping out dust from the surface to be cleaned. Since the rotational cleaning body can be smoothly rotated by suppressing the fluctuations in the rotational torque and the rotational speed of the rotary cleaning body, noise accompanying the rotation of the rotary cleaning body can be suppressed, and the cleaning surface to be cleaned is substantially the entire length of the rotary cleaning body. In addition, the flow of air collected around the rotary cleaning unit to the electric blower side is not disturbed and the outside air can be easily sucked in through the intake port, further improving the dust absorption performance. Can be improved.

According to the suction port body of the fifth aspect of the present invention, in addition to the effect of any one of the first to fourth aspects of the invention, the end portion of the cleaning member is attached to the end of the intake port. By making them closer to each other, it is possible to improve the performance of scraping out dust on the surface to be cleaned on the end side of the intake port.

According to the air circulation type vacuum cleaner of the sixth aspect of the present invention, the suction port body according to any one of the first to fifth aspects is provided, so that the first problem can be solved. There is.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing a configuration of an entire upright type air circulation type vacuum cleaner according to a first embodiment of the present invention with a part thereof cut away.

FIG. 2 is a cross-sectional view showing a cleaner body and a suction port body of the electric vacuum cleaner according to the first embodiment.

FIG. 3 is an enlarged cross-sectional view showing a structure around a suction port body of the electric vacuum cleaner shown in FIG.

FIG. 4 is a plan view showing the configuration of the suction port body shown in FIG.

FIG. 5 is a plan view showing the structure of the suction port body shown in FIG. 3 with a main part upper case removed and a part thereof shown in section.

FIG. 6 is a plan view showing the configuration of the suction port body shown in FIG. 3 with the main case upper case and the main part middle case removed.

FIG. 7 is a bottom view showing the configuration of the suction port body shown in FIG.

FIG. 8 is a sectional view taken along line ZZ in FIG.

9A is a side view showing a communication pipe provided in the suction port body shown in FIG. 9B is a cross-sectional view taken along the line YY in FIG. (C) is a front view showing a partial cross section of a communication pipe provided in the suction port body shown in FIG. 3.

FIG. 10A is a plan view showing a partial cross section of a rotary cleaning body included in the suction port body shown in FIGS. 6 and 7. (B)
FIG. 8 is a front view of the rotary cleaning body included in the suction port body shown in FIGS.

FIG. 11 is an exploded perspective view showing a part of the rotary cleaning body shown in FIG.

FIG. 12 is a cross-sectional view corresponding to FIG. 8 showing a configuration of a suction port body of an upright type air circulation vacuum cleaner according to a second embodiment of the present invention.

FIG. 13 is a diagram showing a configuration of a suction port body of an upright type air circulation type vacuum cleaner according to a second embodiment.
Corresponding plan view.

[Explanation of symbols]

11 ... vacuum cleaner, 12 ... Vacuum cleaner body, 13 ... Suction mouth, 31 ... Dust bag (filter), 35 ... Electric blower, 51 ... communication pipe, 52 ... Suction mouth main part, 53 ... rotary cleaning body, 54 ... reflux outlet 61 ... Outer pipe part, 62 ... Inner tube portion, 62a ... inlet of the inner pipe section, 63 ... Axis tube part, 71 ... upper case of main part, 72 ... Main subordinate case, 73 ... Main case middle case, 82 ... collection room, 83 ... Blowout room, 91 ... Intake port, 91a ... the end of the intake port, 101 ... Core axis, 102, 103 ... blade (cleaning member), 104, 105 ... Support shaft support, 105a ... Notch groove, 106 ... a supporting shaft, 107 ... Bearing, A ... Return airway, B ... Suction air passage, 121 ... rotary cleaning body, 122 ... core axis, 123 ... blade base, 124 ... blade (cleaning member), 125 ... supporting shaft, 126 ... Support shaft support, 127 ... Bearing.

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A47L 9/08 A47L 5/14

Claims (6)

(57) [Claims] 1. An air blower built into a cleaner body passes air through a filter to capture dust, and the air discharged from the electric blower through the filter is collected and circulated for cleaning. In the suction port body provided in the electric vacuum cleaner, the main part of the suction port body having an intake port for sucking air on the surface to be cleaned as the air circulates, and the cleaner provided in the main part. A communication pipe that communicates with the main body side, and a rotatably mounted inside the main body of the suction port facing the inlet port and partially facing the inlet port of the communication pipe .
And a rotary cleaning body having a plurality of cleaning members on the outer peripheral surface, and the rotary cleaning body is placed between the intake port and continuous or discontinuous with the suction port main body along the width direction of the main part. Is provided for the cleaning member, and the circulating air is sprayed onto the cleaning member from above and the sprayed air is cleaned.
Axis of the rotary cleaning body so as to be sprayed onto the surface from above
A backflow outlet that is displaced from each other , and each of the cleaning members is connected to at least the connection of the rotary cleaning body.
On the outer peripheral surface of the part that does not face the entrance of the pipe,
A part of the air blown from the recirculation outlet is removed by the rotary cleaning.
Guide it to the end of the sweeper and spray it on the surface to be cleaned below.
Suction mouth characterized by being installed . 2. The axis of the rotary cleaning body is defined by the reflux outlet.
2. It is provided so as to be shifted to the front side with respect to the above.
The suction mouth according to. 3. The cleaning member comprises at least the rotary cleaning body.
Is also provided on both sides in the axial direction, and both cleaning members are
The twist directions of the two are opposite to each other.
The suction mouth according to 1 or 2 . 4. The cleaning member is provided over substantially the entire length of the rotary cleaning body.
A contract characterized by being continuously provided so as to be wrapped around
The suction mouthpiece according to any one of claims 1 to 3 . 5. The rotary cleaning body comprises a core shaft and an outside of the shaft.
The cleaning member protruding from the peripheral surface and both ends of the core shaft
A support shaft support fitted coaxially on the outer circumference of the
These support shafts protruding from the support shaft support
Formed with bearings that support each shaft,
Fitting part of one of the supporting shaft supports to the core shaft
Forming a plurality of notch grooves extending in the axial direction on the
Pass the end of the material through the notch groove and
5. The projection according to claim 1, wherein the projection is made from the outer peripheral surface.
The suction mouthpiece according to any one of the above. 6. A suction device is operated by an electric blower inside the cleaner body.
The air on the surface to be cleaned is sucked in through the intake port of the
Pass the inhaled air through a filter to capture dust and
The air that passes through the filter and is discharged from the electric blower.
Return it to the intake port, collect the returned air, and circulate it.
In an electric vacuum cleaner that performs cleaning while moving the suction port body, the suction port body may be any one of claims 1 to 5.
The electric cleaning characterized by being the suction mouth according to the item.
Machine.